ITCIndia testing facilities are equipped with multiple type-c moving mirror color goniophotometers and integrating spheres up to 3 meters in diameter – ideal for testing large troffers and LED street lights.

ITCIndia laboratory features both a Type A and Type C Goniometer for testing a wide variety of luminaires.

LM-79-08. It is the Illuminating Engineering Society of North America (IESNA) approved method for the Electrical and Photometric Measurements of Solid-State Lighting. It measures an LED luminaire or integral lamp as a whole system according to a standard process using specified equipment.

Approved method describing procedures and precautions in performing reproducible measurements of LED Lights:

Total luminous flux

Electrical powers

Luminous Intensity distribution

Efficacy (lm/watt)

Chromaticity

LM-79 Luminaire Testing Scope:

Applies to LED-based products incorporating control electronics and heat sinks, that is, those devices that require only AC mains power or a DC voltage power supply to operate.

Absolute Photometry Basis:

LM-79 requires complete luminaire testing

Traditionally, photometric evaluation of lighting products is based on separate tests for lamps and luminaires (Relative)

For SSL products, LED lamps typically cannot be separated from their luminaire because of heat effects (Absolute)

Relative vs. Absolute Photometry:

Relative testing – Lamps of interest and luminaire (with reference lamp) are measured separately. Then the actual light distribution and intensity of the complete luminaire of interest is derived by normalization of the test data

Absolute testing – The actual light distribution and intensity of the luminaire of interest is measured directly from the complete luminaire.

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ITC INDIA provide testing against LM 79 – Approved Method for the Electrical and Photometric Testing of Solid-State Lighting Devices. Our lab is totally equipped with following high accuracy testing instruments to provide a total testing solution for LED based product

High Precision CCD Spectroradiometer

Digital Power Meter (RS-232 Model)

Digital CC and CV DC Power Supply

Integrating Sphere (Diameter=2.0M)

Standard Light Source (24V/50W)

LED Power Driver Tester

LM-79 Test report Contains:

Total luminous flux

Electrical power

Luminious Efficacy

Chromaticity

CCT, CRI

If you have any query regarding LM-79 Testing and Certification. Kindly send us your testing requirements with the product technical details to submit you our testing charges.

We are waiting for your earliest reply.You can call or write us for any clarification